An eccentric jewel-thief invites an assortment of people for a country house week-end, then keeps them prisoner after his plans to steal their jewels have been discovered.

A young couple become engaged, but enjoy a number of comedic aventures before their wedding day.

Madeleine's middle-class family cannot understand why she puts off marrying a respectable young man, as they know nothing about her long-term affair with a Frenchman.

Two young gentlemen living in 1890s England use the same pseudonym ('Ernest') on the sly, which is fine until they both fall in love with women using that name, which leads to a comedy of mistaken identities.

Richard Hanney has a rude awakening when a glamorous female spy falls into his bed - with a knife in her back. Having a bit of trouble explaining it all to Scotland Yard, he heads for the hills of Scotland to try to clear his name by locating the spy ring known as The 39 Steps.